Application layer firewall different from a packet-filtering firewall

1.How is an application layer firewall different from a packet-filtering firewall?

2.Why is an application layer firewall sometimes called a proxy server?

3.What is stateful inspection?

4.What is a VPN? Why is it becoming more widely used?

5.What is content filtering, and should it be leveraged on a corporate network?  Backup your statement with 2 or 3 facts.

Please pick two peer posts for your responses. Do you agree with their statements on content filtering or disagree and why? Are there other angles they did not add?  I expect a minimum of 3 posts per discussion question; the first response will be your initial answer to the discussion question.  When responding to a peer’s initial post, I expect more than just “I agree or disagree.” I want you to back up your opinion and add to the overall discussion.